FemtoMAX performanceExpected Fall 2021Achieved Dec 17, 2020
Energy range



1.8 -12 keV ( 1 – 6.5 Å)1.8 -12 keV ( 1 – 6.5 Å)
Photon source In-vacuum undulator U15In-vacuum undulator U15
Monochromator Double crystal monochromator with Si(111) InSb(111) crystals.
Multi-layer mirrors
Double crystal monochromator with Si(111) InSb(111) crystals.
Multi-layer mirrors
Photons per pulse on sample1% BW>2·10⁶ at 4 keV>2·10⁶ at 4 keV
Repetition rate10 Hz10 Hz
Harmonic content1:10001:1000
BandwidthSi ∆E/E≈2·10-4 (2.5-12 keV)
InSb ∆E/E≈4·10⁻⁴ (1.8-12 keV)
ML ∆E/E=0.01 (1.8-12 keV)
Si ∆E/E≈2·10-4 (2.5-12 keV)
InSb
Monochomator throughput @ 5 keV>70% crystal >50% ML>70% crystal >50% ML
OpticsUnfocused/ Rhodium coated Si-mirror, Be-lenses, Harmonic rejection mirrorUnfocused/ Rhodium coated Si-mirror, Be-lenses, Harmonic rejection mirror
PolarizationLinearLinear
Pulse duration<250 fs<250 fs
Synchronisation<1 ps (may achieve jitter compensation <200 fs temporal resolution)<1 ps (5 ps drift) (jitter compensation gives <500 fs temporal resolution)
Spot size on sample
150 x 150 µm²

150 x 150 µm²
EquipmentUltrafast laser at sample (5 mJ @800 nm, 0.5 mJ at 1200 nm)
Tilt platform
Robot detector holder
Vacuum GIXS
Ultrafast laser at sample (5 mJ @800 nm, 0.5 mJ at 1200 nm.
Tilt platform, Robot detector holder
Vacuum GIXS